The jlpm command is JupyterLab's pinned version of yarn that is installed with JupyterLab. You may use yarn or npm in lieu of jlpm below. Create and activate your conda environment: conda create-n jupyterlab-ext--override-channels--strict-channel-priority-c conda-forge-c nodefaults jupyterlab = 4 nodejs = 18 git copier = 8 jinja2-time conda ...Dec 5, 2022 · Having the same issue, I tried your hack without any luck. The env variable is correctly setup however we still have the permission denied in the logs. This used to work flawlessly with: jupyterhub 2.3.1 jupyter_client : 7.3.5 jupyter_core : 4.11.1 jupyter_server : 1.18.1 jupyterlab : 3.4.6. now we have: jupyterhub 3.0.0 jupyter_client : 7.4.7 Browser and version: Chrome 88.0.4324.96. JupyterLab version: 2.2.6. jasongrout mentioned this issue. Code Editor out of Sync #9588. jasongrout closed this as completed on Mar 16, 2021. jasongrout added this to the Reference milestone on Mar 16, 2021. github-actions bot added the status:resolved-locked label on Sep 12, 2021.Jun 9, 2022 · Per user-direction, the job has been aborted. ----- ----- mpirun.real detected that one or more processes exited with non-zero status, thus causing the job to be terminated. Hi is a DNS request to cloudflare on every notebook close part of the normal working of Jupyter Lab? I am using latest version 3.1.10. it happens even on a simple notebook containg single print statement. even if ext…[W 2021-07-04 00:48:47.534 LabApp] 'allow_remote_access' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release. [W 2021-07-04 00:58:14.588 LabApp] Could not determine jupyterlab build status without nodejs [W 00:49:42.417 NotebookApp] No such …It seems wrong that jupyterlab should require nodejs at a version that is beyond what pip provides. And the github homepage indicates that python-nodejs is [UNMAINTAINED] , so maybe it is …If you use conda with default Anaconda packages (i.e., you don’t normally use conda-forge), you should install Node.js from the Anaconda default channel with conda install nodejs …Could not determine jupyterlab build status without nodejs. is it trying to download nodejs from cdnjs. ... Thanks. canspotify September 7, 2021, 5:13pm 2. OS = Ubuntu 21.04 Just to add does not happen with windows 10 or 11. jasongrout September 7, 2021, 9:25pm 3. What is the request it is making? ...Could not determine jupyterlab build status without nodejs没有 nodejs 无法确定 jupyterlab ... Could not determine jupyterlab build status without nodejs 但是，我为我的配置（Windows 10，Python 3.7 的 Anaconda 发行版）解决它的方式是 download NodeJS from the source。JupyterLab. zymurgist66 September 14, 2023, 5:40pm 1. This has been driving me crazy for over a year. ... Could not determine jupyterlab build status without nodejs [E 2023-09-14 12:16:10.988 ServerApp] ... Cross-posted here without acknowledgment. Those interested should also check there. Home ; Categories ;I get the following warning when running Jupyterlab: Could not determine jupyterlab build status without nodejs. Related answers I found just proposed to install node/npm, which I have done: node -v v.10.24.1 Part of my pip freeze:where inclusion of the nodejs package was triggered by a previous install attempt giving: Could not determine jupyterlab build status without nodejs at launch, and ipympl was included for use of %matplotlib widgets magic. How can I fix the trust issues in this install? Ubuntu 20.04, python 3.9.2, jupyterlab 3.0.9ここでjupyter labをまた起動してみると、エラーが見えるようになった. エラーの内容↓. Error: The module '\\?\C:\Program Files …Browser and version: Chrome 88.0.4324.96. JupyterLab version: 2.2.6. jasongrout mentioned this issue. Code Editor out of Sync #9588. jasongrout closed this as completed on Mar 16, 2021. jasongrout added this to the Reference milestone on Mar 16, 2021. github-actions bot added the status:resolved-locked label on Sep 12, 2021.jupyterlab-git extension fails to load in the latest JupyterLab v3.5.1 (last working version is v3.4.8). Tested on Linux and Mac OS. RuntimeError: Calling 'GitSettingsHandler.get_current_user()' directly is deprecated in jupyter-server 2...0. I notice code autocompletion is not working on my jupyterlab, but it works on my Jupyter Notebook. Simple code like pd.read_ and press <tab> but nothing happens on jupyterlab. I expect intellisense pop up and I can choose from list of read_csv or read_excel etc. And, when I type an open bracket (, the cell doesn't create an autocomplete end ...[W 2021-07-04 00:58:14.588 LabApp] Could not determine jupyterlab build status without nodejs [W 00:49:42.417 NotebookApp] No such channel: 'control' 1 Like. krassowski July 4, 2021, 12:12pm 4. I don’t know enough ... No, Node.js is not required. It works for me with jupyter/datascience-notebook. Here is my pip list:Aug 13, 2020 · 解決済. Jupiter labo にて、起動はできるがセルの実行がなされません。. （*のまま計算されない）. 計算等を始めようとしたところ、print ('hello')のような簡単な指示も反映されない状態でした。. 実行しても、 [*]のままとなり、結果が表示されないまま固まっ ... When I use the py38-jupyterlab-3.1.14 package on an RPi4 board running FreeBSD 13-STABLE, installed using pkg(8), and connect with a web browser, I get the following message: [W 2021-12-19 13:19:54.137 LabApp] Could not determine jupyterlab build status without nodejs I wonder if there is a missing run-time dependency for this port/package on nodejs?Fixed a bug in which kernels used by notebooks did not contain the specified machine learning frameworks. Miscellaneous software updates. April 04, 2023. Vertex ...I get the following warning when running Jupyterlab: Could not determine jupyterlab build status without nodejs. Related answers I found just proposed to install node/npm, …I don't know where that might be kept, but you might want to be sure all kernel sessions are stopped, all browser tabs are closed, then restart your notebook server (application, not machine). This message implies a mismatch of packages and I would recommend upgrading your Notebook package to the current version. Note that if you also upgrade ...To resolve the "Could not determine JupyterLab Build Status without NodeJS" error, you will need to install NodeJS on your system. Here's how: Windows Go to the NodeJS website ( https://nodejs.org) and click on the "Recommended For Most Users" download button. Run the downloaded installer and follow the installation instructions.Note: non-interactive SSH login does not source your dotfiles, so the path to your Jupyter installation is not set. To address, need to source .zshrc (or whichever dotfile you use to set your paths). 3. Source your ~/.aliases so you can use the aliasesJupyterLab. zymurgist66 September 14, 2023, 5:40pm 1. This has been driving me crazy for over a year. ... Could not determine jupyterlab build status without nodejs [E 2023-09-14 12:16:10.988 ServerApp] ... Cross-posted here without acknowledgment. Those interested should also check there. Home ; Categories ;where inclusion of the nodejs package was triggered by a previous install attempt giving: Could not determine jupyterlab build status without nodejs at launch, and ipympl was included for use of %matplotlib widgets magic. How can I fix the trust issues in this install? Ubuntu 20.04, python 3.9.2, jupyterlab 3.0.9When searching extensions in the Extension Manager, JupyterLab displays the complete search result and the user is free to install any source extension. This is the Default mode. To bring more security, you or your administrator can enable blocklists or allowlists mode. JupyterLab will check the extensions against the defined listings. Per user-direction, the job has been aborted. ----- ----- mpirun.real detected that one or more processes exited with non-zero status, thus causing the job to be terminated.Aug 13, 2020 · 解決済. Jupiter labo にて、起動はできるがセルの実行がなされません。. （*のまま計算されない）. 計算等を始めようとしたところ、print ('hello')のような簡単な指示も反映されない状態でした。. 実行しても、 [*]のままとなり、結果が表示されないまま固まっ ... Sep 23, 2019 · In order to install everything I tried: pip install pixiedust , pip install pixiedust_node , conda install -c akode pixiedust , jupyter pixiedust install. and still, when I am trying to load the code in Jupyter, I am getting this: and after trying this: conda install -c anaconda nodejs or even this: conda install -c conda-forge nodejs. node.js. While trying to launch Jupiter Lab from Anaconda Navigator, I am continuously getting 'Server Connection Error- Invalid Response: 500 Internal Server Error'. Tried some solutions of Issues tracked onI don't know where that might be kept, but you might want to be sure all kernel sessions are stopped, all browser tabs are closed, then restart your notebook server (application, not machine). This message implies a mismatch of packages and I would recommend upgrading your Notebook package to the current version. Note that if you also upgrade ...Run without error/stop at breakpoints (for example this stops at each iteration and was run until 3 occurred: Unable to load extension: pydevd_plugins.extensions.types.pydevd_plugin_pandas_types Starting test script Printing 0 06-04-2023_09-56-37 Printing 1 06-04-2023_09-56-37 Printing 2 06-04-2023_09-56-37 …If you encounter the “Could not determine JupyterLab Build Status without NodeJS” error, it means that NodeJS is not installed on your system. Could not determine jupyterlab build status without nodejs · Issue ...Q. Jupyter opens to my base environment, not the environment I launched jupyter lab from. Is this an error? A. This is the expected behavior. You can double check your environment by typing conda env list from your Jupyter terminal to see all of your environments. The one with the asterisks next to it is your activated environment.I get the following warning when running Jupyterlab: Could not determine jupyterlab build status without nodejs. Related answers I found just proposed to install node/npm, which I have done: node -v v.10.24.1 Part of my pip freeze:The Statue of Liberty took eight years to build. It was constructed in stages between 1876 and 1884 by a team of French craftsmen under the direction of sculptor Frédéric Auguste Bartholdi, but it was not displayed until 1886.When I use the py38-jupyterlab-3.1.14 package on an RPi4 board running FreeBSD 13-STABLE, installed using pkg (8), and connect with a web browser, I get the …[W 2021-07-04 00:48:47.534 LabApp] 'allow_remote_access' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release. [W 2021-07-04 00:58:14.588 LabApp] Could not determine jupyterlab build status without nodejs [W 00:49:42.417 NotebookApp] No such …If targeted, today is the last day to enroll in a status challenge that could earn you Medallion status through January 2022. Airlines are doing their best to lure travelers back on to their planes and encourage them to build loyalty. Recen...7 I have installed Jupyter Lab but when I launch it I get an error: "Server Connection Error Invalid response: 500 Internal Server Error" My python set up is Anaconda which probably has something to do with this. Full error message from command line: jupyter lab [I 11:09:41.874 LabApp] [jupyter_nbextensions_configurator] enabled 0.2.8Aug 13, 2020 ... ... Could not determine jupyterlab build status without nodejs 16[I 15:54:07.021 LabApp] Creating new notebook in / 17[I 15:54:07.183 LabApp] ...JupyterLab is a web-based interactive development environment (IDE) that allows users to create and share documents that contain live code, equations, visualizations, and narrative text. It is the latest evolution of the popular Jupyter Notebook and offers several advantages over its predecessor. We provide an overview the JupyterLab architecture and explain how to start using JupyterLab as a ...where inclusion of the nodejs package was triggered by a previous install attempt giving: Could not determine jupyterlab build status without nodejs at launch, and ipympl was included for use of %matplotlib widgets magic. How can I fix the trust issues in this install? Ubuntu 20.04, python 3.9.2, jupyterlab 3.0.9Sep 2, 2022 · Jupyterlab image without nodejs [W 2022-09-02 17:46:05.820 LabApp] Could not determine jupyterlab build status without nodejs add nodejs and npm to Dockerfile ## I want to add an additional Python library For JupyterLab you have to enable the Python virtual environment, install the library and then restart the JupyterLab service. ``` source playbook/bin/activate pip install sudo systemctl restart misp-playbook-jupyter.service ``` # MISP playbooks on GitHub - FAQ ## I don't see the images in my playbook!When it comes to managing your property, knowing its dimensions is crucial. Whether you are planning to build, sell, or simply want to have a clear understanding of your property boundaries, determining accurate property dimensions is essen...Have you ever found yourself wondering about the history of your home? Perhaps you’ve recently purchased a property and want to know more about its construction and the people behind it. In this article, we will explore the steps you can ta...Could not determine jupyterlab build status without nodejs #4327 Closed pleabargain opened this issue on Apr 6, 2018 · 7 comments pleabargain commented on Apr 6, 2018 pleabargain closed this as completed on Apr 6, 2018 brucmao mentioned this issue on Mar 25, 2019 Rename ErrorInvalid response: 400 Invalid header received from client #6135Sep 13, 2020 · Point to Note is only in Jupyter Lab the issue is seen whereas in jupyter notebook folder navigation is successful. Also only navigation to folders such as Documents,Downloads,Desktop are failing.Rest other folder navigation works fine with jupyter lab as well.It seems to be some sort of permission issue.Not Really sure what config should be done. Jul 23, 2023 · (internal generated filenames are not absolute). This may make the debugger miss breakpoints. Related bug: Issue 1666807: Incorrect file path reported by inspect.getabsfile() - Python tracker [W 2023-07-23 12:02:30.353 LabApp] Could not determine jupyterlab build status without nodejs. After that I cannot give in any more commands. [LabBuildApp] Building jupyterlab assets (build:prod) [LabBuildApp] > node C:\Users\r051122\Anaconda3\lib\site-packages\jupyterlab\staging\yarn.js install ... Could not determine jupyterlab build status without nodejs. Related ... Could not determine jupyterlab build status without nodejs. 8 Install JS Node in Jupyter Notebook. 11 ...None yet Projects No milestone Development Jupyterlab image without nodejs [W 2022-09-02 17:46:05.820 LabApp] Could not determine jupyterlab build status without nodejs add nodejs and npm to Dockerfile[W 2022-09-23 09:47:49.887 LabApp] Could not determine jupyterlab build status without nodejs [I 2022-09-23 09:47:50.393 ServerApp] Kernel started: afa4234d-48ac-4505-b6a0-e3fa220161cd [I 2022-09-23 09:47:50.404 ServerApp] Kernel started: 9404ff88-622f-4ba8-86b1-404d648588fc [MetaKernelApp] ERROR | No such comm target …Many users and organizations have not been able to switch to JupyterLab yet. For some users, JupyterLab can also be a more complex environment to use, especially for beginners. Following the feedback from the community, it was decided in late 2021 to continue developing the Jupyter Notebook application and _sunrise_ it as Notebook 7.Jul 23, 2023 · (internal generated filenames are not absolute). This may make the debugger miss breakpoints. Related bug: Issue 1666807: Incorrect file path reported by inspect.getabsfile() - Python tracker [W 2023-07-23 12:02:30.353 LabApp] Could not determine jupyterlab build status without nodejs. After that I cannot give in any more commands. Could not determine jupyterlab build status without nodejs Related answers I found just proposed to install node/npm, which I have done: node -v v.10.24.1 Part of my pip freeze:In order to install everything I tried: pip install pixiedust , pip install pixiedust_node , conda install -c akode pixiedust , jupyter pixiedust install. and still, when I am trying to load the code in Jupyter, I am getting this: and after trying this: conda install -c anaconda nodejs or even this: conda install -c conda-forge nodejs. node.js.Could not determine jupyterlab build status without nodejs. 这个是Anaconda中缺少node.js； 具体处理： 如果JupyterLab没有退出，可以用【ctrl + z】退出； 然后输入下面的命令： conda install -c conda-forge nodejs. 根据提示，进行node.js安装即可； 第二个错误：I don't know where that might be kept, but you might want to be sure all kernel sessions are stopped, all browser tabs are closed, then restart your notebook server (application, not machine). This message implies a mismatch of packages and I would recommend upgrading your Notebook package to the current version. Note that if you …Sep 13, 2020 · Point to Note is only in Jupyter Lab the issue is seen whereas in jupyter notebook folder navigation is successful. Also only navigation to folders such as Documents,Downloads,Desktop are failing.Rest other folder navigation works fine with jupyter lab as well.It seems to be some sort of permission issue.Not Really sure what config should be done. jupyterlab-git extension fails to load in the latest JupyterLab v3.5.1 (last working version is v3.4.8). Tested on Linux and Mac OS. RuntimeError: Calling 'GitSettingsHandler.get_current_user()' directly is deprecated in jupyter-server 2...In order to install everything I tried: pip install pixiedust , pip install pixiedust_node , conda install -c akode pixiedust , jupyter pixiedust install. and still, when I am trying to load the code in Jupyter, I am getting this: and after trying this: conda install -c anaconda nodejs or even this: conda install -c conda-forge nodejs. node.js.Expected behavior Context. Operating System and version: Windows 10; Browser and version: Chrome; JupyterLab version: Troubleshoot Output Paste the output from running `jupyter troubleshoot` from the command line here.In Jupyterlab 4.0.3 some commands like print(), range(), list(), etc are not colored with the standard color-scheme green as can be seen in the following image. In Jupyterlab version 3.x I not face ...This option will default to False (i.e., the. production build) for most users. However, if you have any labextensions. installed from local files, this option will instead default to True. Explicitly setting dev-build to False will ensure that the production. build is used in all circumstances.Jupyter does not use asyncio's default Proactor event loop, and setting it with asyncio.set_event_loop_policy(asyncio.WindowsProactorEventLoopPolicy()) or asyncio.set_event_loop(asyncio.ProactorEventLoop()) has no effect. Everything works as expected on IPython on the terminal, however. Reproduce. Create a fresh virtualenv, install jupyterlabMay 29, 2021 · 223 1 2 10. You redacted too much of the path in 'C:\Users\xxxxx\package.json' to be able to understand which package.json is causing the issue. Please add back the missing details. – krassowski. May 29, 2021 at 9:06. hi @krassowski, thanks for the reply. the xxxxx in 'C:\Users\xxxxx\package.json', is the exactly my user name. For some users, JupyterLab can also be a more complex environment to use, especially for beginners. Following the feedback from the community, it was decided in late 2021 to continue developing the Jupyter Notebook application and sunrise it as Notebook 7. You can find more details about the changes currently taking place in the …Jupyterlab WSL2: Could not determine jupyterlab build status without nodejs I get the following warning when running Jupyterlab: Could not determine jupyterlab build status without nodejs Related answers I found just proposed to install node/npm, which I have done: node -v v....Jul 2, 2023 · I already have the latest version of standalone installation of Node.js (20.3.1), also I've installed Python package (pip install nodejs). Version checks work as expected. Version checks work as expected. Apr 6, 2018 · Could not determine jupyterlab build status without nodejs. but nodejs (0.1.1) is installed. from pip3 list: jupyter (1.0.0) jupyter-client (5.2.3) jupyter-console (5.2.0) jupyter-core (4.4.0) jupyterlab (0.31.12) jupyterlab-discovery (4.0.0) jupyterlab-launcher (0.10.5) Mar 21, 2018 · [W 11:09:42.740 LabApp] Could not determine jupyterlab build status without nodejs ... Could not determine jupyterlab build status without nodejs Sep 23, 2022 · You may encounter the error ‘could not determine jupyterlab build status without nodejs error’ when working with Jupyterlab. The error also involves node.js. Two types of Jupyterlab extensions are there. One is a source extension and the other one is prebuilt extension. If your Jupyter log shows "has moved from NotebookApp to ServerApp" warnings you should migrate from notebook server to jupyter server, thus:. rename (with backup) Jupyter config from ~/.jupyter/jupyter_notebook_config.py to jupyter_server_config.py, andNone yet Projects No milestone Development Jupyterlab image without nodejs [W 2022-09-02 17:46:05.820 LabApp] Could not determine jupyterlab build status without nodejs add nodejs and npm to DockerfileJan 8, 2020 · then, when I execute jupyter lab I get the following warning: Could not determine jupyterlab build status without nodejs, and no Jupytext commands. so I added nodejs=13.0.0 to the requirements, and then jupyter lab suggested to rebuild the extension: Hi @masasin - I apologize for the delayed response.. I think this may be related to the discussion in #5851 and how the fallbacks work. For example, if multiple languages were embedded in the various envs and not all languages had entries for the same translated text pieces, then it seems as though you'd see multiple languages in …Aug 6, 2020 · Expected behavior Context. Operating System and version: Windows 10; Browser and version: Chrome; JupyterLab version: Troubleshoot Output Paste the output from running `jupyter troubleshoot` from the command line here. status:resolved-locked Closed issues are locked after 30 days inactivity. Please open a new issue for related discussion. Please open a new issue for related discussion. ProjectsI ran into a similar issue this morning and ended up here. The diagnostic message appears to be harmless: [W 07: 35: 51.998 LabApp] Could not determine jupyterlab build status without nodejs . However, the way I resolved it for my configuration (Windows 10, Anaconda distribution of Python 3.7) was to download …Now you are mixing Dolfin and DOLFINx instructions. You should fetch dolfinx/lab or the dolfinx/dolfinx image; and use them as any other image with docker as described in: Docker Desktop WSL 2 backend | Docker …
May 12, 2021 · My plan is to use JupyterLab as the plain Notebook interface is not very well liked among students. Here is a two-cell MWE notebook: import numpy as np %matplotlib widget import matplotlib.pyplot as plt. Next cell: plt.figure (1) x = np.arange (100) y = x*x plt.plot (x,y) plt.show () When I run these cells I do get an interactive Matplotlib plot. . Cochise county mug shots
May 12, 2021 · My plan is to use JupyterLab as the plain Notebook interface is not very well liked among students. Here is a two-cell MWE notebook: import numpy as np %matplotlib widget import matplotlib.pyplot as plt. Next cell: plt.figure (1) x = np.arange (100) y = x*x plt.plot (x,y) plt.show () When I run these cells I do get an interactive Matplotlib plot. [W 2022-02-15 22:12:48.541 LabApp] Could not determine jupyterlab build status without nodejs [I 2022-02-15 22:12:50.434 ServerApp] Kernel started: e19a3253-0ed4-4bd7-b8f3-afa84232ac87 [I 2022-02-15 22:12:53.425 ServerApp] AsyncIOLoopKernelRestarter: restarting kernel (1/5), new random ports [I 2022-02-15 …Here are the steps to assist you in checking the value of the PATH environment variable on Windows: Hold the Windows key with the window icon on it and Break. Hit the Advanced System Settings option. Go for Environment Variables. Opt for System Variables. Double-click on the PATH environment variable to edit it.Jan 29, 2021 · production build is used. This option will default to False (i.e., the. production build) for most users. However, if you have any labextensions. installed from local files, this option will instead default to True. Explicitly setting dev-build to False will ensure that the production. build is used in all circumstances. Now you are mixing Dolfin and DOLFINx instructions. You should fetch dolfinx/lab or the dolfinx/dolfinx image; and use them as any other image with docker as described in: Docker Desktop WSL 2 backend | Docker …I ran into a similar issue this morning and ended up here. The diagnostic message appears to be harmless: [W 07: 35: 51.998 LabApp] Could not determine jupyterlab build status without nodejs . However, the way I resolved it for my configuration (Windows 10, Anaconda distribution of Python 3.7) was to download …Feb 25, 2021 · I think this is related to an issue with nodejs, though I’m not sure how to resolve it. Below is what is returned in the terminal when I attempt to run a Lab notebook. Very relevant edit: I should mention that this works fine in a regular Jupyter notebook. [W 2021-02-25 13:00:08.507 LabApp] Could not determine jupyterlab build status without ... The Statue of Liberty took eight years to build. It was constructed in stages between 1876 and 1884 by a team of French craftsmen under the direction of sculptor Frédéric Auguste Bartholdi, but it was not displayed until 1886.Bug description. The example for running a shared notebook as a service does not work when jupyterlab is used as a single-user server (which is about to be the default for version 2.0).. A similar problem has been reported in #1611.Unlike the previous report, a shared classic notebook service works fine, hence opening a new issue.Mar 13, 2023 · 1、通过Anaconda Prompt，启动JupyterLab. 命令：jupyter lab（见下图）. 2、打开上图中的链接；貌似可以了，但是打开之后，点击下图中的图标之后，. 3、在启动的JupyterLab下，发现了两个错误；. 第一个错误：. Could not determine jupyterlab build status without nodejs. 这个是Anaconda中 ... Mar 13, 2023 · 1、通过Anaconda Prompt，启动JupyterLab. 命令：jupyter lab（见下图）. 2、打开上图中的链接；貌似可以了，但是打开之后，点击下图中的图标之后，. 3、在启动的JupyterLab下，发现了两个错误；. 第一个错误：. Could not determine jupyterlab build status without nodejs. 这个是Anaconda中 ... Sep 7, 2021 · here is the request ; 59878+ [1au] AAAA? cdnjs.cloudflare.com (58). asking for AAAA records. since i have blocked it, my DNS server responds with: 59878 ServFail 0/0/1 (58) 换了新的环境，重新反复 安装了Anaconda但Jupyter打不开了。. 不知道是不是安装了一些东西的步骤不对还是其他的原因。. 尝试了一些方法，. 1、先 pip install --upgrade pip sudo pip install jupyter notebook. 2、重新下载 pip install jupyter. 或者先卸载 conda uninstall jupyterlab..